Very heavy snow occurred across much of southeast Wyoming 30-31 December 2022 that extended into the first couple days of January 2023.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
Very heavy snow occurred across much of southeast Wyoming 30-31 December 2022 that extended into the first couple days of January 2023.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before the first event at Dec 30, 10:37 AM MST, 23 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
SNOTEL site Old Battle (OLDW4) in the Sierra Madre Range reported estimated 12 inches of snow at this time. The Little Snake SNOTEL (LITW4) site also reported 12 inches of snow at 31/6AM.
SNOTEL site Medicine Bow (MBSW4) reported estimated 12 inches at this time. The Brooklyn Lake SNOTEL (BKLW4) also reported 12 inches at 31/5AM.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2022Every state in 2022This day in weather historyWarnings in Wyoming, December 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1066264, 1066265.